This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 144 |
| 3 | 1298 |
| 4 | 11637 |
| 5 | 107720 |
| 6 | 997264 |
| 7 | 9205575 |
| 8 | 84987637 |
| 9 | 784968276 |
| 10 | 7250191247 |
| 11 | 66962229085 |
| 12 | 618461917882 |
| 13 | 5712150826447 |
| 14 | 52757783396467 |
| 15 | 487273980078400 |
| 16 | 4500491954718670 |
| 17 | 41566823940472846 |
| 18 | 383913783539151670 |